Yes 14 is the Idle Air Control... that woudn't be causing your car to shut off.. also i see your car is a Dx.. was the multipoint conversion done prior to the install of the Ls? (has the car ran correct w/ the multipoint swap done) if so.. Normally when a car will idle but the instant you try to give it gas and it cuts off it because of lack of fuel i.e. no fuel pressure, no gas.. ect.. I would check and make sure you can hear the pump priming and the car is getting gas to the rail. Also, what ecu are you on? Pr4? -Ben